Question

单击页面上的按钮后，我无法从一个页面导航到另一个页面。我已经定义了导航规则。

<managed-bean>
 <description>helloWorld</description>
 <managed-bean-name>helloWorld</managed-bean-name>
 <managed-bean-class>com.ritz.web.HelloWorld</managed-bean-class>
 <managed-bean-scope>request</managed-bean-scope>
</managed-bean>
<navigation-rule>
 <from-view-id>/HelloWorldProg.xhtml</from-view-id>
 <navigation-case>
  <from-outcome>success</from-outcome>
  <to-view-id>/welcome.xhtml</to-view-id>
 </navigation-case>
</navigation-rule>
<application>
 <view-handler>com.sun.facelets.FaceletViewHandler</view-handler>
</application>

web.xml是

<!-- Welcome page -->
<welcome-file-list>
 <welcome-file>faces/HelloWorld.xhtml</welcome-file>
</welcome-file-list>

<!-- JSF mapping -->
<servlet>
 <servlet-name>Faces Servlet</servlet-name>
 <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
 <load-on-startup>1</load-on-startup>
</servlet>

<!-- Map these files with JSF -->
<servlet-mapping>
 <servlet-name>Faces Servlet</servlet-name>
 <url-pattern>/faces/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
 <servlet-name>Faces Servlet</servlet-name>
 <url-pattern>*.faces</url-pattern>
</servlet-mapping>
<servlet-mapping>
 <servlet-name>Faces Servlet</servlet-name>
 <url-pattern>*.jsf</url-pattern>
</servlet-mapping>
<servlet-mapping>
 <servlet-name>Faces Servlet</servlet-name>
 <url-pattern>*.xhtml</url-pattern>
</servlet-mapping>

Answer 1

首先，您需要一种方法来在按钮点击后设置操作：

public String nextPage()
{
    if (username.equals("guest") && password.equals("guest"))
    {
        return "loginSuccess";
    }
    return "loginFailure";
}

接下来您需要做的是将按钮操作属性与方法连接：

<h:commandButton value="Submit Values" action="#{YourBean.nextPage}"/>

然后您需要做的是设置导航规则：

<navigation-rule>
    <description></description>
    <from-view-id>/login.xhtml</from-view-id>
    <navigation-case>
        <from-outcome>loginSuccess</from-outcome>
        <to-view-id>/loginSuccess.xhtml</to-view-id>
    </navigation-case>
<navigation-case>
        <from-outcome>loginFailure</from-outcome>
        <to-view-id>/loginFailure.xhtml</to-view-id>
    </navigation-case>        
</navigation-rule>    
</faces-config>

最后一件事。如果您有这样的映射：

<servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>/faces/*</url-pattern>
</servlet-mapping>

你应该把所有面孔/ login.xhtml，faces / success.xhtml等等放在一起。

JSF导航问题

1 个答案: